/*
 * OpenMusicPlayerView.java
 */

package openmusicplayer;

import javax.swing.event.ListSelectionEvent;
import org.jdesktop.application.Action;
import org.jdesktop.application.ResourceMap;
import org.jdesktop.application.SingleFrameApplication;
import org.jdesktop.application.FrameView;
import org.jdesktop.application.TaskMonitor;
import java.applet.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.net.*;
import javax.swing.DefaultListModel;
import javax.swing.Timer;
import javax.swing.Icon;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.event.ListSelectionListener;
import javax.swing.plaf.basic.BasicListUI.ListSelectionHandler;


/**
 * The application's main frame.
 */
public class OpenMusicPlayerView extends FrameView {

    public OpenMusicPlayerView(SingleFrameApplication app) {
        super(app);

        initComponents();

        // status bar initialization - message timeout, idle icon and busy animation, etc
        ResourceMap resourceMap = getResourceMap();
        int messageTimeout = resourceMap.getInteger("StatusBar.messageTimeout");
        messageTimer = new Timer(messageTimeout, new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                statusMessageLabel.setText("");
            }
        });
        messageTimer.setRepeats(false);
        int busyAnimationRate = resourceMap.getInteger("StatusBar.busyAnimationRate");
        for (int i = 0; i < busyIcons.length; i++) {
            busyIcons[i] = resourceMap.getIcon("StatusBar.busyIcons[" + i + "]");
        }
        busyIconTimer = new Timer(busyAnimationRate, new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                busyIconIndex = (busyIconIndex + 1) % busyIcons.length;
                statusAnimationLabel.setIcon(busyIcons[busyIconIndex]);
            }
        });
        idleIcon = resourceMap.getIcon("StatusBar.idleIcon");
        statusAnimationLabel.setIcon(idleIcon);
        progressBar.setVisible(false);

        // connecting action tasks to status bar via TaskMonitor
        TaskMonitor taskMonitor = new TaskMonitor(getApplication().getContext());
        taskMonitor.addPropertyChangeListener(new java.beans.PropertyChangeListener() {
            public void propertyChange(java.beans.PropertyChangeEvent evt) {
                String propertyName = evt.getPropertyName();
                if ("started".equals(propertyName)) {
                    if (!busyIconTimer.isRunning()) {
                        statusAnimationLabel.setIcon(busyIcons[0]);
                        busyIconIndex = 0;
                        busyIconTimer.start();
                    }
                    progressBar.setVisible(true);
                    progressBar.setIndeterminate(true);
                } else if ("done".equals(propertyName)) {
                    busyIconTimer.stop();
                    statusAnimationLabel.setIcon(idleIcon);
                    progressBar.setVisible(false);
                    progressBar.setValue(0);
                } else if ("message".equals(propertyName)) {
                    String text = (String)(evt.getNewValue());
                    statusMessageLabel.setText((text == null) ? "" : text);
                    messageTimer.restart();
                } else if ("progress".equals(propertyName)) {
                    int value = (Integer)(evt.getNewValue());
                    progressBar.setVisible(true);
                    progressBar.setIndeterminate(false);
                    progressBar.setValue(value);
                }
            }
        });
    }

    @Action
    public void showAboutBox() {
        if (aboutBox == null) {
            JFrame mainFrame = OpenMusicPlayerApp.getApplication().getMainFrame();
            aboutBox = new OpenMusicPlayerAboutBox(mainFrame);
            aboutBox.setLocationRelativeTo(mainFrame);
        }
        OpenMusicPlayerApp.getApplication().show(aboutBox);
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents()
    {

        mainPanel = new javax.swing.JPanel();
        songBeingPlayed = new javax.swing.JLabel();
        chosenSoundFiles = new javax.swing.JScrollPane();
        songList = new javax.swing.JList();
        playButton = new javax.swing.JButton();
        chooseFilesButton = new javax.swing.JButton();
        jLabel1 = new javax.swing.JLabel();
        menuBar = new javax.swing.JMenuBar();
        javax.swing.JMenu fileMenu = new javax.swing.JMenu();
        javax.swing.JMenuItem exitMenuItem = new javax.swing.JMenuItem();
        javax.swing.JMenu helpMenu = new javax.swing.JMenu();
        javax.swing.JMenuItem aboutMenuItem = new javax.swing.JMenuItem();
        statusPanel = new javax.swing.JPanel();
        javax.swing.JSeparator statusPanelSeparator = new javax.swing.JSeparator();
        statusMessageLabel = new javax.swing.JLabel();
        statusAnimationLabel = new javax.swing.JLabel();
        progressBar = new javax.swing.JProgressBar();

        mainPanel.setName("mainPanel"); // NOI18N

        org.jdesktop.application.ResourceMap resourceMap = org.jdesktop.application.Application.getInstance(openmusicplayer.OpenMusicPlayerApp.class).getContext().getResourceMap(OpenMusicPlayerView.class);
        songBeingPlayed.setText(resourceMap.getString("songBeingPlayed.text")); // NOI18N
        songBeingPlayed.setName("songBeingPlayed"); // NOI18N

        chosenSoundFiles.setName("chosenSoundFiles"); // NOI18N

        songList.setModel(new javax.swing.AbstractListModel()
        {
            String[] strings = { "Add your songs here..." };
            public int getSize() { return strings.length; }
            public Object getElementAt(int i) { return strings[i]; }
        });
        songList.setSelectionMode(javax.swing.ListSelectionModel.SINGLE_SELECTION);
        songList.setName("songList"); // NOI18N
        chosenSoundFiles.setViewportView(songList);

        playButton.setText(resourceMap.getString("playButton.text")); // NOI18N
        playButton.setName("playButton"); // NOI18N
        playButton.addActionListener(new java.awt.event.ActionListener()
        {
            public void actionPerformed(java.awt.event.ActionEvent evt)
            {
                playButtonClicked(evt);
            }
        });

        chooseFilesButton.setText(resourceMap.getString("chooseFilesButton.text")); // NOI18N
        chooseFilesButton.setName("chooseFilesButton"); // NOI18N
        chooseFilesButton.addActionListener(new java.awt.event.ActionListener()
        {
            public void actionPerformed(java.awt.event.ActionEvent evt)
            {
                chooseFilesButtonClicked(evt);
            }
        });

        jLabel1.setText(resourceMap.getString("jLabel1.text")); // NOI18N
        jLabel1.setName("jLabel1"); // NOI18N

        javax.swing.GroupLayout mainPanelLayout = new javax.swing.GroupLayout(mainPanel);
        mainPanel.setLayout(mainPanelLayout);
        mainPanelLayout.setHorizontalGroup(
            mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(mainPanelLayout.createSequentialGroup()
                .addContainerGap()
                .addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(playButton)
                    .addGroup(mainPanelLayout.createSequentialGroup()
                        .addComponent(jLabel1)
                        .addGap(18, 18, 18)
                        .addComponent(songBeingPlayed))
                    .addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                        .addComponent(chooseFilesButton)
                        .addComponent(chosenSoundFiles, javax.swing.GroupLayout.PREFERRED_SIZE, 449, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addContainerGap(26, Short.MAX_VALUE))
        );
        mainPanelLayout.setVerticalGroup(
            mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(mainPanelLayout.createSequentialGroup()
                .addContainerGap()
                .addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(songBeingPlayed))
                .addGap(18, 18, 18)
                .addComponent(chosenSoundFiles, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(chooseFilesButton)
                .addGap(34, 34, 34)
                .addComponent(playButton)
                .addContainerGap(118, Short.MAX_VALUE))
        );

        songBeingPlayed.getAccessibleContext().setAccessibleName(resourceMap.getString("songBeingPlayed.AccessibleContext.accessibleName")); // NOI18N

        menuBar.setName("menuBar"); // NOI18N

        fileMenu.setText(resourceMap.getString("fileMenu.text")); // NOI18N
        fileMenu.setName("fileMenu"); // NOI18N

        javax.swing.ActionMap actionMap = org.jdesktop.application.Application.getInstance(openmusicplayer.OpenMusicPlayerApp.class).getContext().getActionMap(OpenMusicPlayerView.class, this);
        exitMenuItem.setAction(actionMap.get("quit")); // NOI18N
        exitMenuItem.setName("exitMenuItem"); // NOI18N
        fileMenu.add(exitMenuItem);

        menuBar.add(fileMenu);

        helpMenu.setText(resourceMap.getString("helpMenu.text")); // NOI18N
        helpMenu.setName("helpMenu"); // NOI18N

        aboutMenuItem.setAction(actionMap.get("showAboutBox")); // NOI18N
        aboutMenuItem.setName("aboutMenuItem"); // NOI18N
        helpMenu.add(aboutMenuItem);

        menuBar.add(helpMenu);

        statusPanel.setName("statusPanel"); // NOI18N

        statusPanelSeparator.setName("statusPanelSeparator"); // NOI18N

        statusMessageLabel.setName("statusMessageLabel"); // NOI18N

        statusAnimationLabel.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
        statusAnimationLabel.setName("statusAnimationLabel"); // NOI18N

        progressBar.setName("progressBar"); // NOI18N

        javax.swing.GroupLayout statusPanelLayout = new javax.swing.GroupLayout(statusPanel);
        statusPanel.setLayout(statusPanelLayout);
        statusPanelLayout.setHorizontalGroup(
            statusPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(statusPanelSeparator, javax.swing.GroupLayout.DEFAULT_SIZE, 487, Short.MAX_VALUE)
            .addGroup(statusPanelLayout.createSequentialGroup()
                .addContainerGap()
                .addComponent(statusMessageLabel)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 303, Short.MAX_VALUE)
                .addComponent(progressBar, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(statusAnimationLabel)
                .addContainerGap())
        );
        statusPanelLayout.setVerticalGroup(
            statusPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(statusPanelLayout.createSequentialGroup()
                .addComponent(statusPanelSeparator, javax.swing.GroupLayout.PREFERRED_SIZE, 2, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addGroup(statusPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(statusMessageLabel)
                    .addComponent(statusAnimationLabel)
                    .addComponent(progressBar, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(3, 3, 3))
        );

        setComponent(mainPanel);
        setMenuBar(menuBar);
        setStatusBar(statusPanel);
    }// </editor-fold>//GEN-END:initComponents

    private void chooseFilesButtonClicked(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_chooseFilesButtonClicked
        //new FileChooser
        JFileChooser songFileChooser = new JFileChooser();
        //multiple file selection is allowed
        songFileChooser.setMultiSelectionEnabled(true);
        //opens the FileChooser dialog and notices, if files have been selected
        int returnValue = songFileChooser.showOpenDialog(null);
        //if files had been chosen
        if(returnValue == songFileChooser.APPROVE_OPTION)
        {
            //removing the "default-items" 
            //songList.clearSelection();
            //setting the list model for adding values to it afterwards
            model = new DefaultListModel();
            songList.setModel(model);
            File[] fileList = songFileChooser.getSelectedFiles();

            //and displaying the selected songs in the application
            for(int i=0; i<songFileChooser.getSelectedFiles().length; i++)
            {
                //adding the files to the model, which is owned by the songList
                model.addElement(fileList[i]);
            }
            //making the new selected files visible in the gui and using it as current model
            songList.setModel(model);

            //add the selected songs to the current song list
            OpenMusicPlayerApp.currentSongs.setSongVector(songFileChooser.getSelectedFiles());
        }
    }//GEN-LAST:event_chooseFilesButtonClicked

    private void playButtonClicked(java.awt.event.ActionEvent evt)//GEN-FIRST:event_playButtonClicked
    {//GEN-HEADEREND:event_playButtonClicked
        try
        {
            URL soundFilePath;
            //if a song is selected in the songlist
            if(songList.getSelectedValue() != null)
            {
                //defining the path, "file:" is needed as protocol
                soundFilePath = new URL("file:".concat(songList.getSelectedValue().toString()));
            }
            //else if no song is selected
            else
            {
                //defining the path, "file:" is needed as protocol
                soundFilePath = new URL("file:".concat(model.getElementAt(0).toString()));
            }

            AudioClip clip = Applet.newAudioClip(soundFilePath);
            //play the clip
            clip.play();
            //displaying the name of the current song by splitting the path string
            songBeingPlayed.setText(OpenMusicPlayerApp.splitPathToTitle(soundFilePath.getFile().toString()));
        }
        catch(MalformedURLException mue)
        {
            System.out.println(mue.getMessage());
            mue.printStackTrace();
        }
    }//GEN-LAST:event_playButtonClicked

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton chooseFilesButton;
    private javax.swing.JScrollPane chosenSoundFiles;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPanel mainPanel;
    private javax.swing.JMenuBar menuBar;
    private javax.swing.JButton playButton;
    private javax.swing.JProgressBar progressBar;
    private javax.swing.JLabel songBeingPlayed;
    private javax.swing.JList songList;
    private javax.swing.JLabel statusAnimationLabel;
    private javax.swing.JLabel statusMessageLabel;
    private javax.swing.JPanel statusPanel;
    // End of variables declaration//GEN-END:variables

    private final Timer messageTimer;
    private final Timer busyIconTimer;
    private final Icon idleIcon;
    private final Icon[] busyIcons = new Icon[15];
    private int busyIconIndex = 0;
    private DefaultListModel model;

    private JDialog aboutBox;

}
